The big companies are the private industry. But they're faced with a short-term need to show a profit in short-term.

A family needs to work as a team, supporting each other's individual aims and aspirations.

Space is not just going up and coming back down again. Space is getting into orbit and being there, living there, establishing a presence, a permanence.

There are a lot of reasons for not doing something. And if humanity had come up with all the reasons for not doing something we wouldn't have spread across the Earth the way we have. There's a curiosity, and I would submit that that curiosity will put human beings on the surface of Mars.

I inherited depression from my mother's side of the family. Her father committed suicide. She committed suicide the year before I went to the moon.

When the time comes to start building deep space transports and refueling rocket tankers, it will be the commercial industry that steps up, not another government-owned, government-managed enterprise.

During the divorce process, I lived alone and tended to get extremely down on myself.